What is the meaning of the adverb "NASA" in the sentence "The expression "NASA" means "National Aeronautics and Space Administration" in English"? Is it a relative pronoun or adverb?
The word "Nasa" is an adverb. It means "National Aeronautics and Space Administration" in English. It is an organization that was founded in 1958 by the United States government to promote the exploration of space.